<div class="layui-form" lay-filter="layuiadmin-form-admin" style="padding: 20px 30px 0 0;">
    <div class="layui-form-item">
            <select lay-filter="selectFilter" id="type" name="type" lay-verify="required">
                <option value="any">任意词</option>
                <option value="author">作者</option>
                <option value="isbn">ISBN</option>
            </select>
    </div>
    <div class="layui-form-item">
            <input type="text" name="keyword" placeholder="搜索..." autocomplete="off" class="layui-input layui-input-search">
    </div>
    <div class="layui-form-item">
    <input type="button" lay-submit lay-filter="LAY-user-back-submit" value="确认" class="layui-btn">
</div>
</div>

<script>
    layui.use(['admin', 'form'], function(){
        var $ = layui.$
            ,form = layui.form, table = layui.table;
        form.render();
    });
</script>